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From: Peter Xu <peterx@redhat.com>
To: Prasad Pandit <ppandit@redhat.com>
Cc: qemu-devel@nongnu.org, Fabiano Rosas <farosas@suse.de>,
	Prasad Pandit <pjp@fedoraproject.org>
Subject: Re: [PATCH 4/5] migration: refactor ram_save_target_page functions
Date: Tue, 5 Nov 2024 08:01:25 -0500	[thread overview]
Message-ID: <ZyoXJRzg3N1ca16N@x1n> (raw)
In-Reply-To: <CAE8KmOy-up_gi8t0qGwtM04QmFvaEK7VmL=1JxEFR-ksHLiQ1w@mail.gmail.com>

On Tue, Nov 05, 2024 at 03:31:19PM +0530, Prasad Pandit wrote:
> On Mon, 4 Nov 2024 at 22:30, Peter Xu <peterx@redhat.com> wrote:
> > Yes, IMHO it's better when merged.
> >
> > One more note here, that even with ZERO_PAGE_DETECTION_MULTIFD, qemu will
> > fallback to use LEGACY in reality when !multifd before.  We need to keep
> > that behavior.
> 
> * Where does this fallback happen? in ram_save_target_page()?

When ZERO_PAGE_DETECTION_MULTIFD is used but when !multifd cap, it'll use
legacy even if it's MULTIFD.  We don't yet change the value, the fallback
will still happen.

-- 
Peter Xu



  reply	other threads:[~2024-11-05 13:02 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-29 15:09 [PATCH 0/5] Allow to enable multifd and postcopy migration together Prasad Pandit
2024-10-29 15:09 ` [PATCH 1/5] migration/multifd: move macros to multifd header Prasad Pandit
2024-10-29 15:09 ` [PATCH 2/5] migration/postcopy: magic value for postcopy channel Prasad Pandit
     [not found]   ` <ZyTnBwpOwXcHGGPJ@x1n>
2024-11-04 12:32     ` Prasad Pandit
2024-11-04 17:18       ` Peter Xu
2024-11-05 11:19         ` Prasad Pandit
2024-11-05 13:00           ` Peter Xu
2024-11-06 12:19             ` Prasad Pandit
2024-11-06 13:11               ` Fabiano Rosas
2024-11-07 12:05                 ` Prasad Pandit
2024-11-07 12:11                   ` Fabiano Rosas
2024-11-07 12:33                   ` Daniel P. Berrangé
2024-11-07 16:17                     ` Peter Xu
2024-11-07 16:57                       ` Daniel P. Berrangé
2024-11-07 17:45                         ` Peter Xu
2024-11-08 12:37                           ` Prasad Pandit
2024-11-08 13:25                             ` Fabiano Rosas
2024-11-06 16:00               ` Peter Xu
2024-11-07 11:52                 ` Prasad Pandit
2024-11-07 15:56                   ` Peter Xu
2024-10-29 15:09 ` [PATCH 3/5] migration: remove multifd check with postcopy Prasad Pandit
     [not found]   ` <ZyTnWYyHlrJUYQRB@x1n>
2024-11-04 12:23     ` Prasad Pandit
2024-11-04 16:52       ` Peter Xu
2024-11-05  9:50         ` Prasad Pandit
2024-10-29 15:09 ` [PATCH 4/5] migration: refactor ram_save_target_page functions Prasad Pandit
     [not found]   ` <ZyToBbvfWkIZ_40W@x1n>
2024-11-04 11:56     ` Prasad Pandit
2024-11-04 17:00       ` Peter Xu
2024-11-05 10:01         ` Prasad Pandit
2024-11-05 13:01           ` Peter Xu [this message]
2024-10-29 15:09 ` [PATCH 5/5] migration: enable multifd and postcopy together Prasad Pandit
2024-11-04 17:48   ` Peter Xu
2024-11-05 11:54     ` Prasad Pandit
2024-11-05 16:55       ` Peter Xu

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